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phy: qcom-qmp-combo: Move phy_mutex out of com_init/exit

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With the upcoming introduction of USB Type-C orientation switching the
region of mutual exclusion needs to be extended to cover both the common
init/exit as well as the individual functions.

So move the phy_mutex one step up the stack.

Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Abel Vesa <abel.vesa@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on HDK8450
Tested-by: Johan Hovold <johan+linaro@kernel.org>	# X13s
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20230515032743.400170-3-quic_bjorande@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bjorn Andersson 2023-05-14 20:27:37 -07:00 committed by Vinod Koul
parent 6c0237db15
commit 02545aa310
1 changed files with 28 additions and 19 deletions
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47
drivers/phy/qualcomm/phy-qcom-qmp-combo.c
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@ -2463,11 +2463,8 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
void __iomem *com = qmp->com;
int ret;
mutex_lock(&qmp->phy_mutex);
if (qmp->init_count++) {
mutex_unlock(&qmp->phy_mutex);
if (qmp->init_count++)
return 0;
}
ret = regulator_bulk_enable(cfg->num_vregs, qmp->vregs);
if (ret) {
@ -2514,8 +2511,6 @@ static int qmp_combo_com_init(struct qmp_combo *qmp)
qphy_setbits(qmp->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
SW_PWRDN);
mutex_unlock(&qmp->phy_mutex);
return 0;
err_assert_reset:
@ -2524,7 +2519,6 @@ err_disable_regulators:
regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
err_decrement_count:
qmp->init_count--;
mutex_unlock(&qmp->phy_mutex);
return ret;
}
@ -2533,11 +2527,8 @@ static int qmp_combo_com_exit(struct qmp_combo *qmp)
{
const struct qmp_phy_cfg *cfg = qmp->cfg;
mutex_lock(&qmp->phy_mutex);
if (--qmp->init_count) {
mutex_unlock(&qmp->phy_mutex);
if (--qmp->init_count)
return 0;
}
reset_control_bulk_assert(cfg->num_resets, qmp->resets);
@ -2545,8 +2536,6 @@ static int qmp_combo_com_exit(struct qmp_combo *qmp)
regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
mutex_unlock(&qmp->phy_mutex);
return 0;
}
@ -2556,21 +2545,29 @@ static int qmp_combo_dp_init(struct phy *phy)
const struct qmp_phy_cfg *cfg = qmp->cfg;
int ret;
mutex_lock(&qmp->phy_mutex);
ret = qmp_combo_com_init(qmp);
if (ret)
return ret;
goto out_unlock;
cfg->dp_aux_init(qmp);
return 0;
out_unlock:
mutex_unlock(&qmp->phy_mutex);
return ret;
}
static int qmp_combo_dp_exit(struct phy *phy)
{
struct qmp_combo *qmp = phy_get_drvdata(phy);
mutex_lock(&qmp->phy_mutex);
qmp_combo_com_exit(qmp);
mutex_unlock(&qmp->phy_mutex);
return 0;
}
@ -2687,14 +2684,19 @@ static int qmp_combo_usb_init(struct phy *phy)
struct qmp_combo *qmp = phy_get_drvdata(phy);
int ret;
mutex_lock(&qmp->phy_mutex);
ret = qmp_combo_com_init(qmp);
if (ret)
return ret;
goto out_unlock;
ret = qmp_combo_usb_power_on(phy);
if (ret)
if (ret) {
qmp_combo_com_exit(qmp);
goto out_unlock;
}
out_unlock:
mutex_unlock(&qmp->phy_mutex);
return ret;
}
@ -2703,11 +2705,18 @@ static int qmp_combo_usb_exit(struct phy *phy)
struct qmp_combo *qmp = phy_get_drvdata(phy);
int ret;
mutex_lock(&qmp->phy_mutex);
ret = qmp_combo_usb_power_off(phy);
if (ret)
return ret;
goto out_unlock;
return qmp_combo_com_exit(qmp);
ret = qmp_combo_com_exit(qmp);
if (ret)
goto out_unlock;
out_unlock:
mutex_unlock(&qmp->phy_mutex);
return ret;
}
static int qmp_combo_usb_set_mode(struct phy *phy, enum phy_mode mode, int submode)